Fourdrinier paper machine



p 1929' A. ALDRICH ET 'AL FOURDRINIER PAPER MACHINE Filed May 20, 1927 5 Sheets-Sheet l v EW :3? E filo/2Z0 flZdn'c/z Earl E Berg OO o E h. mm M EQUU w P 3, 19291 A. ALDRlCH ET AL 1,726,973

FOURDRINIER PAPER MACHINE Filed May 20, 1927 5 sheets-sheet 2 P 1929- A. ALDRICH ET AL FOURDRINIER PAPER MACHINE 5 Sheets-Sheet 5 Filed May 20, 1927 Sept. 3, 1929. A. ALDRICH ET AL FOURDRINIER PAPER MACHINE- Filed May 20, 1927 5 Sheets-Sheet 4 E622! E. Bag; gig

P 1929' A. ALDRICH ET AL FQURDRINIER PAPER MACHINE Filed May 20, 1927 5 Sheets-Sheet OQOOQ OOOUOOOOOQ U UOQBDO 7 N M y M f B v Awvmw Patented Sept. 3, 1929,

UNITED STATES PATENT OFFICE.

ALONZO ALDRICH ANDIIA RL E. BERRY, F BELOIT, WISCONSIN, ASSIGNORS TO IBELOIT IRON WORKS, A CORPORATION OF WISCONSIN.

FOURDRINIER, PAPER MACHINE.

Application filed Kay 20, 1927. Serial No. 192,877.

v This invention relates to a Fourdrinier paper machine of the laterally removable type and more particularly to the construction of the F ourdrinier part of the machine. Heretofore Fourdriniers of the laterally removable type have in general been provided with heavy sub-structures for supporting the removable table. Such substructures not only add considerably to the cost of the machines but they require constantupkeep expenditures to prevent them from rusting out.

It is therefore an object of this invention toprovide a Fourdrinier structure which eliminates the usual substructure.

It is a further object of this invention to provide a table structure that may be raised or lowered at the couch end to vary the pitch of the wire without'altering the intake end of the Fourdrinier or osition of the fiow box.

It is a further 0 ject of this invention to provide a pitch adj fistable Fourdrinier wherein the table rolls can be shakenindependently of the supporting table structure and the breast roll may be shaken with the table rolls or independently thereof, or to a different degree.

It is a further important object of this invention to provide a Fourdrinier of the laterally removable type capable of being adjusted as to pitch and adapted to be lowered onto tracks for lateral removal, the tracks being at different elevations, whereby the Fourdrinier is automatically lifted from .the normal support on being lowered onto said tracks.

It is a'further important object of this invention to provide a Fourdrinier section that is shake-able, adjustable as to pitch without altering the position of the breast roll end and removable as a unit to facilitate the changing of-wires.

Other and further important objects of this invention will be apparent from the disclosures in the specification and the accompanying drawings.

This invention (in a preferred form) is illustrated in the drawings and hereinafter more fully described.

On the drawings:

Figure 1 is a front elevational diagram- 0 matic view of the Fourdrinier section and flow box of a Fourdrinier paper machine embodying theprincipl'es of this invention;

Figure 2 is a fragmentary broken top plan view of the same, showing a shaking mechanism and tracks upon which the table structure is laterally removable; Figure 3 is an enlarged fragmentary vie of the breast end of the machine shown in Figure 1; Figure 4 is a fragmentary enlarged elevational view of the couch end of the machine shown in Figure 1;

Figure 5 is an enlarged broken elevational v1ew taken on line VV of Figure 4;

Figure 6 isa front elevational diagrammatic view of the Fourdrinier section and flow box illustrating the table structure in lowered position for lateral removal; and

Figure 7 is a fragmentary broken top plan view of the truck structure upon which the Fourdrinier is removable.

. As shown on the drawings:

The reference numeral 1 indicates as a whole a unitary table structure adapted to form a part of the Fourdrinier section of a paper machine embodying the principles of this invention. Said table structure 1 comprises a pair of lateral side beams 2 (Figure 5) of channel-shaped cross section and provided with strengthening webs 3 at spaced intervals, and cross beams 4 rigidly secured at their ends to said lateral beams 2 to form a rigid unitary table structure. Table rolls 5 of the usual construction, instead of being supported directly upon the side beams 2 are supported from said side beams 2 uponresilient arms 6 to provide for shaking of the table rolls 5 independently of the table supporting structure. Said resilient strips 6, which are preferably formed of wood, are bolted at their lower ends as at 7 (Figure 5) to the lower portions of said side beams 2 and at their upper ends to table rails 8. Said table rails 8 carry bearings 9 for supporting the journals of the table rolls 5, adjusting bolts 10 being provided to permit the respective ends of the table rolls 5 to be raised or lowered for leveling purposes, The rear table rail 8 is connected through resilient strips 47 to a shaking mechanism indicated as a whole by the reference numeral 11, positioned at the rear side of the machine.

The table structure 1, including the table rolls 5,--suction boxes 12, and various wire carrying rolls 13 supported therefrom, is according to our invention pivotally supported as a unit at its breast end and adjustably supported at its couch end to permit the pitch of the tableto be varied in accordance with the requirements of the particular kind of paper.

solely in operative position upon the pivotal supports 18. A jack 19 supports the couch end of each of said side beams 2, each of said jacks 19 being provided with a head 20 (Figure 5) adapted to fit within a socket 21 formed in the lower portion of a bracket 22 rigidly secured to a side beam 2. The jacks 19 are preferably of the screw type and for this purpose comprise bases 23 having sleeves 24 into which the screws 25 are adapted to extend. The jacks 19 may accordingly be power operated to raise or lower the couch end of the table structure for pivotal movement about the supports 18 to adjust the pitch lof'the table structure and consequently the wire 26.

pitch of the paper forming section of the The breast roll 27 (Figures 1 to 3, inclusive) is mounted separately from the table structure in bearing brackets 29 carried by resilient supporting members 28. A mounting of suitable type is disclosed'in the Berry Patent No. 1,599,402. Other resilientstrips 30 connect said bearing brackets 29 to a flow box -supporting frame 31. A flow box 32, which is of any suitable type, is stationarily supported from said supporting frame 31 and from a foundation or flooring 33. An apron 34 delivers the stock from the flow box 32 onto the traveling wire 26 in accordance with known principles. V

The shaking, mechanism 11, already referred to, comprises a supporting base 35 (Figure 5) from which is supported by means of resilient members 36 and 37 a plurality of split clamping straps 38 inc-losing" an extended shaker shaft 39. Said shaker shaft 39 is adapted to be rotated through a small are by means of an eccentric (not shown) connected to an arm 40, the shaking mechanism being similar to that disclosed in the Aldrich Patent No. 1,595,593, which issued August 10, 1926. Each of the bearing clamps 38 is formed with an upwardly extending shaker arm 41, a plurality of such shaker arms being provided at spaced intervals along the shaft 39. Removably engaged on each of the shaker arms 41'is a yoke 42, said yokes being provided with bolts 43 and handle nuts 44 to permit the yokes to be removed from the shaker arms 41 or adjusted thereon as to height. Guide pins or projections 45 are formed on the sides of each yoke 42. Removably secured to the rear table rail when the table structure is lowered. rollers 57 at the front side of the machine are 8 are a plurality of forked guide members 46, the forked ends of which slidably project between said guide pins 45. Shaker strips or springs 47 are connected to each of the yokes 42 and removably connected to the rear table rail 8 by means of bolts 48. The breast roll 27 is also connected through spring strips .49 (Figure 2) to ashaker arm 41. It will be apparent that the degree of shaking oftable or breast roll may be varied by varying the eccentricity of the eccentric or the table rolls or breast roll may be shaken independently of each other by disconnecting the proper yokes 42 by removing the bolts 48. I

The removable feature of the invention will now be described. A plurality of tracks 50 and 51 are positioned beneath the table structure 1 at or near the respective ends thereof. The track 50 is pivotally mounted upon a pivot post 52 at the front side of the machine and adjacent one of the jacks 19. Said track 50 lies at a level considerably below the normalheight of the jack 19 to provide for vertical adjustment of said jack 19 to obtain the desired range in the pitch of the wire and table structure without the table structure coming into contact with the rail 50. Thetrack51is pivotallymounted upon a pivot post 53 positioned at the rear of the machine and elevated considerably above the level of the track 50. The free end of the track 51 (Figure 3) is adapted to rest upon a shoe 54 formed on a pedestal 55. A plate 56 supported from said pedestal 55 limits the swing of the track 51. Similar construction is provided for the track 50.

Each of the side beams 2 carries rollers 57 (Figure 5) supported therefrom in brackets 58 and .adapted to rest on the rails 50 and 51 The mounted on a common shaft 59 (Figures 3 and 5) adapted to be driven from any suitable source of. power (not shown). Outside rails 60 and 61 are adapted to be aligned with the inside rails 50 and 51, as shown in Figure 7,

when the table structure is to be moved out of the machine. Said rails 60 and 61 may be pivotally mounted from brackets 62 and 63 or may be of any suitable type. Other methods of mounting the inside tracks 50 and 51 are disclosed in our copending application, Serial Number 57,272, filed September 19, 1925.

When it is desired to change a wire on the machine, the old wire is first removed in the usual manner and the breast roll 27 is moved towards and supported on the table by any of the well-known ways, for instance, as disclosed in the Berry Patent No. 1,599,422, issued September 1'4', 1926. The deckle pulle; 66 is preferably supported from overhead by a chain 67. The jacks 19 are then lowered until the table structure 1 rests upon the tracks 50 and 51, asshown in Figure In this position the relative elevations of said tracks 50 and 51 are such as to bring the brackets 14 on the breast end of the table structure clear of the pivotal supports 18. The table structure is then runvout over the tracks 50 and 51 onto the tracks 60 and 61 and a new wire suspended in looped condition between the normal positions of thecouch roll and breast roll, the tracks 50 and 51 being swung parallel to the length of the machine previous to this operation. The tracks 50 and 51 are then brought back into transverse position and the table structure rolled back into place onto said tracks 50 and 51 inside of the looped wire. 4

It will be apparent that during the operation of the machine the pitch of the wire may be readily changed by raising or lowering the couch end of the table structure 1 by means of the jacks 19. Since the breast end of the table structure remains substantially at the same elevation, being pivotal about the pivotal support 18, such variation in the pitch of the wire may be effected without altering the conditions at the breast roll end of the Fourdrinier section.

\Ve are aware that many changes may be made, and numerous details of construction may be varied through a wide range without departing from the principles of this invention, and We therefore do not purpose limiting the patent granted hereon,-otherwise than necessitated by the prior art.

We claim as our invention:

1. In a F ourdrinier paper machine, a laterally removable table structure, means for pivotally supporting the breast roll end of said table structure, and means for raising and lowering the couch end of said table structure to vary the pitch of the wire.

2. In a Fourdrinier paper machine, a l'aterally removable table structure, means for pivotally supporting the breast roll end of said table structure, means for raising and lowering the couch end of said table structure to vary the pitch of the wire, and tracks upon which said table structure is adapted to be removable as a unit.

3. In a Fourdrinier paper machine, a laterally removable table structure, means for pivotally supporting the breast roll end of said table structure, means for raising and lowering the couch end of said table structure to vary the pitch of the wire, and tracks positioned beneath said table structure out of normal contact therewith onto which said table structure is adapted to be lowered for lateral removal. i

4. In a Fourdrinier paper machine, a laterally removable table structure, means for pivotally supporting the breast roll end of said table structure, means for raising and lowering the couch end of said table structure to vary the pitch of the wire, and tracks positioned beneath said table structure out of normal contact therewith onto which said table structure is adapted to be lowered for lateral removal, said tracks being placed at different elevations to support said table structure free of said pivotal supporting means.

5. In a Fourdrinier paper machine, a table structure comprising lateral side beams extending unbrokenly the full length thereof, means for pivotally supporting said side beams near the breast end, jacks for normally supporting the couch ends of said side beams, and fixed tracks pivotally mounted at one end for swinging movement upon which said table structure is adapted to be lowered.

6. In a Fourdrinier'paper machine, the combination with a laterally removable Fourdrinier table structure of means for raising and lowering the couch end of said table structure.

7. In a Fourdrinier paper machine, the combination with a unitary laterally removable Fourdrinier table structure of means for raising and lowering the couch end of said table structure to adjust the pitch of said table structure as a unit.

8. In a Fourdrinier paper machine, a pivotally mounted table structure at the breast roll end and including table rolls, and suction boxes and means for shaking said table rolls independent of the main part of said table structure.-

9. In a Fourdrinier paper machine, a table structure including table rolls, means for shaking said table rolls independent of the main part of said table structure, and means for raising and lowering the couch end of said tabl structure to vary the pitch thereof.

10. In a Fourdrinier paper machine, a unitary table structure including table rolls and suction boxes, means for shaking said table rolls independent of the main part of said table structure, and means for raising and low-' ering the couch end of said table structure to vary the pitch thereof as a unit.

11. In a Fourdrinier paper machine, a removable table structure including table rolls mounted thereon, means for varying the pitch of said table structure, a separately mounted breast roll, means for shaking said table rolls and said breast roll, and means for readily disconnecting said table rolls from said shaking means to shake said breast roll independently of said table rolls.

12. In a Fourdrinier paper machine, a removable table structure "including table rolls.

tionary flow box, a table structure, a separately mounted breast roll and means for raising and lowering the couch end of said table structure to vary the pitch thereof.

14. In a Fourdrinier paper machine, a stationary fiow box, a table structure, pivotal supporting means for the breast roll end of said table structure, a separately mounted breast roll and means for raising and lowering the couch end of said table structure to vary the pitch thereof.

15. In a Fourdrinier paper machine, a table structure, pivotal supporting means for the breast roll end of said table structure, height adjustable means for supporting the couch end of said table structure, inside tracks positioned at different levels onto which said table structure is adapted 'to be lowered, outside tracks adapted to be aligned with said inside tracks, and power operated means for moving said table structure'out onto said out side tracks.

16. In a Fourdrinier paper machine, a table structure, pivotal supporting means for thetary table structure, a separately mounted breast roll, stationary means for pivotally supporting the breast roll end of said table structure, and means for adj ustably supporting the couch end of said table structure, said means forming the sole normal support for said table structure.

18. In a F ourdrinier paper machine, a unitary table structure, stationary means for pivotally supporting the breast roll end of said table structure, means for adjustably supporting the couch endaof said table structure, said means forming the sole normal support for said table structure, and tracks stationarily positioned at difierent levels onto which said table structure is adapted to be automatically lowered by operation of said adjustable means, said table structure in lowered position being clear of said pivotal supporting means. I

19. In a Fourdrinier paper machine, a unitary table structure, a breast and couch roll, a wire trained around said breast, couch roll, and table structure, pivotal supporting means for the breast roll end of said table structure, height adjustable supporting means for the couch end of said table structure, tracks positioned above the lower run of said wire and at difierent elevations normally out of contact with said table structure, and means for operating said adjustable supporting means to lower said table structure onto said tracks out of contact with said pivotal and adjustable sunnorting means.

In testimony whereof we have hereunto subscribed our names at Beloit, Rock County,

Wisconsin.

, ALONZO ALDRICH.

EARL E. BERRY. 

